Shaquille O’Neal is the subject of an open assault investigation by police in Atlanta after an incident his lawyer described as “horseplay” in which a co-worker was injured last year.

No charges have been filed by local police over the event, which according to a police report is alleged to have occurred May 9 and first reported to police July 2.

According to Robert Williams, a co-worker of O’Neal’s at Turner Studios, for whom O’Neal is an NBA analyst, the 15-time All-Star “ran out of a room and hit me with a tackle punch to the back knocking me down and falling on top of me injuring my neck and back,” the police report says.

Williams said Turner Security was made aware of the incident within a day.